Collapsible tube



FIG. 1 is a perspective view of a collapsible tube showing my new design;

FIG. 2 is a top plan view thereof the bottom being substantially the same in appearance;

FIG. 3 is a side elevational view, the opposite side being substantially the same in appearance;

FIG. 4 is a view looking from the right of FIG. 3;

FIG. 5 is a view looking from the left of FIG. 3;

FIG. 6 is a perspective view with the dispensing closure in a retracted position;

FIG. 7 is a top plan view thereof the bottom being substantially the same in appearance;

FIG. 8 is a side elevational view, the opposite side being substantially the same in appearance;

FIG. 9 is a view looking from the right of FIG. 8; and

FIG. 10 is a view looking from the left of FIG. 8. 

The ornamental design for a collapsible tube, substantially as shown and described. 